基于多模光纤偏振烧孔效应的双波长掺铒光纤激光器  

Dual-wavelength Er-doped fiber laser based on polarization hole burning of multi-mode fiber

作　　者：董凤娟[1] 杨秀峰[1] 童峥嵘[1] 曹晔[1] 

机构地区：[1]天津理工大学智能计算及软件新技术重点实验室薄膜电子与通信器件重点实验室,天津300384

出　　处：《光电子．激光》2011年第6期841-844,共4页Journal of Optoelectronics·Laser

基　　金：天津市自然科学基金资助项目(08JCYBJC14400;11JCYBJC00100)

摘　　要：基于多模光纤(MMF)引入的偏振烧孔(PHB)效应,研制了一种环形双波长掺铒光纤(EDF)激光器。单模光纤(SMF)-MMF-SMF组成的结构使MMF不同偏振方向的反射模在波长上分开,利用PHB效应实现双波长的输出,输出波长间隔可通过改变MMF的长度改变。实验对比了1.6 m和3.0 m长的MMF输出波谱特性,结果表明,通过增加MMF的长度,不但可以使输出波长的波长间隔变小,而且输出功率也会有一定的提高。本文研制的激光器,通过PHB效应以及偏振相关隔离器(PDI)和偏振控制器(PC)的影响,在常温下实现了消光比为55 dB、边模抑制比为53 dB以及输出功率为-2 dBm的两个连续波长的稳定输出。A dual-wavelength Er-doped fiber laser based on polarization hole burning（PHB） of multi-mode fiber is proposed.The structure of single mode fiber（SMF）-multi-mode fiber（MMF）-SMF makes reflection modes in different polarization directions of MMF split.Thus,dual-wavelength laser output is realized through PHB.Moreover,the wavelength spacing can alter through changing the length of MMF.In this paper,the output characteristics are compared when a MMF with length of 1.6 m and 3 m are introduced,respectively.The results indicate that the output wavelength spacing becomes smaller but the output power increases when the length of MMF increases.Finally,a stable dual-wavelength with 55 dB extinction ratio,53 dB side mode suppression ratio and-2 dBm output power is realized through the PHB and the influence of polarization-dependent isolator（PDI） and polarization controller（PC）.

关 键 词：激光技术 偏振烧孔(PHB) 多模光纤(MMF) 拍频效应 

分 类 号：TN248.1[电子电信—物理电子学]